Abstract
Research Article| June 01, 1989 Sodium-calcium ion exchange in the weathering of shales: Implications for global weathering budgets T. E. Cerling; T. E. Cerling 1Department of Geology and Geophysics, University of Utah, Salt Lake City, Utah 84112 Search for other works by this author on: GSW Google Scholar B. L. Pederson; B. L. Pederson 1Department of Geology and Geophysics, University of Utah, Salt Lake City, Utah 84112 Search for other works by this author on: GSW Google Scholar K. L. Von Damm K. L. Von Damm 2Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6036 Search for other works by this author on: GSW Google Scholar Author and Article Information T. E. Cerling 1Department of Geology and Geophysics, University of Utah, Salt Lake City, Utah 84112 B. L. Pederson 1Department of Geology and Geophysics, University of Utah, Salt Lake City, Utah 84112 K. L. Von Damm 2Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6036 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1989) 17 (6): 552–554. https://doi.org/10.1130/0091-7613(1989)017<0552:SCIEIT>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation T. E. Cerling, B. L. Pederson, K. L. Von Damm; Sodium-calcium ion exchange in the weathering of shales: Implications for global weathering budgets. Geology 1989;; 17 (6): 552–554. doi: https://doi.org/10.1130/0091-7613(1989)017<0552:SCIEIT>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Unpolluted rivers and streams that drain marine shales show an excess of sodium compared to chloride and a deficiency of calcium and magnesium compared to sulfate and alkalinity. This is due in part to cation exchange of sodium for divalent cations on clay minerals. Consideration of the global weathering budget suggests that up to 34% of the sodium in the total dissolved stream load may be due to cation exchange rather than sodium production via silicate dissolution weathering reactions. These results suggest that the weathering budgets for sodium and calcium are in need of revision because of the inclusion of cation-exchange processes in the weathering cycle. This implies that silicate dissolution is less important in determining the composition of global river water than was previously thought. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
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